The debate over rhetoric is about as hypocritical and bad faith as it gets. Trump's VP nominee is one of many people to compare Trump to Hitler (extreme? absolutely), and the rhetoric from the right has been laced with the catchy "Let's Go Brandon," "F@#$ your Feelings," and perhaps most notoriously: "Hang Mike Pence."
This "American Carnage" rhetoric has been the status quo across both sides of the aisle since long before this moment in our history, and if we believe in the First Amendment, it will continue for the foreseeable future. People, particularly political campaigns, are allowed to express their views, no matter how repugnant they may seem to one side or another. For many on the left, electing someone who still cannot accept a free and fair election in 2020 is, in fact, a credible threat to democracy. For many on the right, electing someone who cannot fully articulate a sentence due to age is also a credible threat to democracy. We shouldn't silence these people for having legitimate concerns, and using those concerns in their campaigning.
We don't know what motivated this kid to pick up a rifle and put the former president in his sights, and we probably won't for a while... or ever. This kind of thing should never happen if we believe in democracy and the power of ballots over bullets. But can we stop being so exceptionally disingenuous and pointing fingers about language?